quiet，they， strong， interest， two， like． unless， choice， but， if， how

The secrets of self﹣control

    A new book， the bestseller， Willpower，says that having strong willpower（意志力）is necessary to a successful life．

    The book starts by describing a famous experiment： The Marshmallow （软糖）Test． In 1972， a psychology（心理学）professor Mischel tested the willpower of 600 kids． In the experiment，each child was left alone in a room for fifteen minutes with a marshmallow on a table in front of（1）　　．They were given two （2）　　，they could either eat the marshmallow or if they waited fifteen minutes， they'd be given a （3）　　marshmallow （and then they could eat both）．

    So， what did the kids do？ 70% ate the first marshmallow within the fifteen minutes．

（4）　　the other 30% showed willpower﹣they didn't eat the first one and waited for the second marshmallow （5）　　．

    Twenty years later． Mischel discovered something （6）　　．He got in touch with the children and found that those with strong willpower were getting better marks at university． They were better behaved and were more popular． So， （7）　　important it is to have strong willpower!

    But don't worry （8）　　 you aren't good at controlling yourself． The authors say that willpower is like a muscle（肌肉）．The more you exercise it， the （9）　　 it gets． However， just （10）　　any muscle， your "willpower muscle" can get tired． So， if you have to do lots of things that need willpower， take a break．That way， you'll build up your willpower again．

    Lastly， the authors mention that people who learn foreign languages usually have a lot of willpower．So， congratulations!